Install printer if not already installed. Download and extract attached file into a folder on your hard drive. Run 'AdjProg.exe' and click 'Accept' on the splash screen then click on 'Select' at the top. From the pull down boxes, select 'Epson Stylus TX121' for 'Model Name' and 'ESP' for 'Destination', click 'OK'. Click 'Particular adjustment mode' then from the '---- Maintenance ----' section, select 'Waste ink pad counter' then click 'OK'. Click 'Check' on the bottom right, this will query the printer and give information of ink shots and so on. Tick the two boxes on the left, 'Main Pad Counter' and 'FL Box Counter', then click 'Initialize'. It should come up with a message abut restarting your printer, do it!